V4L/DVB (3249): Generalized cx25840 video/audio input handling

- Added VIDIOC_S_AUDIO to set the audio inputs separately.
- Removed AUDC_SET_INPUT.
- Made the video inputs much more general.
- Removed cardtype CID and replaced with a CID to enable
the PVR150 workaround. The cardtype is no longer necessary
with the general video input change.
- Update VIDIOC_LOG_STATUS output to show the video and
audio inputs separately.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>

drivers/media/video/cx25840/cx25840-audio.c

@@ -37,8 +37,7 @@ static int set_audclk_freq(struct i2c_client *client, u32 freq)
 	/* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
 	cx25840_write(client, 0x127, 0x50);
 
-	switch (state->audio_input) {
-	case AUDIO_TUNER:
+	if (state->aud_input != CX25840_AUDIO_SERIAL) {
 		switch (freq) {
 		case 32000:
 			/* VID_PLL and AUX_PLL */
@@ -79,12 +78,7 @@ static int set_audclk_freq(struct i2c_client *client, u32 freq)
 			cx25840_write4(client, 0x90c, 0xaa4f0108);
 			break;
 		}
-		break;
-
-	case AUDIO_EXTERN_1:
-	case AUDIO_EXTERN_2:
-	case AUDIO_INTERN:
-	case AUDIO_RADIO:
+	} else {
 		switch (freq) {
 		case 32000:
 			/* VID_PLL and AUX_PLL */
@@ -137,7 +131,6 @@ static int set_audclk_freq(struct i2c_client *client, u32 freq)
 			cx25840_write4(client, 0x90c, 0x55550108);
 			break;
 		}
-		break;
 	}
 
 	/* deassert soft reset */
@@ -148,48 +141,33 @@ static int set_audclk_freq(struct i2c_client *client, u32 freq)
 	return 0;
 }
 
-static int set_input(struct i2c_client *client, int audio_input)
+void cx25840_audio_set_path(struct i2c_client *client)
 {
 	struct cx25840_state *state = i2c_get_clientdata(client);
 
-	cx25840_dbg("set audio input (%d)\n", audio_input);
-
 	/* stop microcontroller */
 	cx25840_and_or(client, 0x803, ~0x10, 0);
 
 	/* Mute everything to prevent the PFFT! */
 	cx25840_write(client, 0x8d3, 0x1f);
 
-	switch (audio_input) {
-	case AUDIO_TUNER:
-		/* Set Path1 to Analog Demod Main Channel */
-		cx25840_write4(client, 0x8d0, 0x7038061f);
-
-		/* When the microcontroller detects the
-		 * audio format, it will unmute the lines */
-		cx25840_and_or(client, 0x803, ~0x10, 0x10);
-		break;
-
-	case AUDIO_EXTERN_1:
-	case AUDIO_EXTERN_2:
-	case AUDIO_INTERN:
-	case AUDIO_RADIO:
+	if (state->aud_input == CX25840_AUDIO_SERIAL) {
 		/* Set Path1 to Serial Audio Input */
 		cx25840_write4(client, 0x8d0, 0x12100101);
 
 		/* The microcontroller should not be started for the
 		 * non-tuner inputs: autodetection is specific for
 		 * TV audio. */
-		break;
+	} else {
+		/* Set Path1 to Analog Demod Main Channel */
+		cx25840_write4(client, 0x8d0, 0x7038061f);
 
-	default:
-		cx25840_dbg("Invalid audio input selection %d\n", audio_input);
-		return -EINVAL;
+		/* When the microcontroller detects the
+		 * audio format, it will unmute the lines */
+		cx25840_and_or(client, 0x803, ~0x10, 0x10);
 	}
 
-	state->audio_input = audio_input;
-
-	return set_audclk_freq(client, state->audclk_freq);
+	set_audclk_freq(client, state->audclk_freq);
 }
 
 inline static int get_volume(struct i2c_client *client)
@@ -292,7 +270,7 @@ inline static void set_mute(struct i2c_client *client, int mute)
 {
 	struct cx25840_state *state = i2c_get_clientdata(client);
 
-	if (state->audio_input == AUDIO_TUNER) {
+	if (state->aud_input != CX25840_AUDIO_SERIAL) {
 		/* Must turn off microcontroller in order to mute sound.
 		 * Not sure if this is the best method, but it does work.
 		 * If the microcontroller is running, then it will undo any
@@ -316,10 +294,9 @@ int cx25840_audio(struct i2c_client *client, unsigned int cmd, void *arg)
 	struct v4l2_control *ctrl = arg;
 
 	switch (cmd) {
-	case AUDC_SET_INPUT:
-		return set_input(client, *(int *)arg);
 	case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 		return set_audclk_freq(client, *(u32 *)arg);
+
 	case VIDIOC_G_CTRL:
 		switch (ctrl->id) {
 		case V4L2_CID_AUDIO_VOLUME:
@@ -341,6 +318,7 @@ int cx25840_audio(struct i2c_client *client, unsigned int cmd, void *arg)
 			return -EINVAL;
 		}
 		break;
+
 	case VIDIOC_S_CTRL:
 		switch (ctrl->id) {
 		case V4L2_CID_AUDIO_VOLUME:
@@ -362,6 +340,7 @@ int cx25840_audio(struct i2c_client *client, unsigned int cmd, void *arg)
 			return -EINVAL;
 		}
 		break;
+
 	default:
 		return -EINVAL;
 	}